CN102308067B - Vehicle control system - Google Patents
Vehicle control system Download PDFInfo
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- CN102308067B CN102308067B CN201080002444.9A CN201080002444A CN102308067B CN 102308067 B CN102308067 B CN 102308067B CN 201080002444 A CN201080002444 A CN 201080002444A CN 102308067 B CN102308067 B CN 102308067B
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- Prior art keywords
- motor
- vehicle
- action
- auxiliary device
- running environment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0833—Vehicle conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0833—Vehicle conditions
- F02N11/0837—Environmental conditions thereof, e.g. traffic, weather or road conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
- F02N2200/0805—Detection of vehicle emergency state, e.g. from ABS, ESP, external sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
- F02N2200/0807—Brake booster state
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2250/00—Problems related to engine starting or engine's starting apparatus
- F02N2250/02—Battery voltage drop at start, e.g. drops causing ECU reset
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2006—Control related aspects of engine starting characterised by the control method using prediction of future conditions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The disclosed system is provided with: an engine (10) that is the motive power source of a vehicle (1); an electricity storage device (13); an assist device (12) that supports the operations of a driver by consuming power from the electricity storage device, causing the operation of a driving device (30) that alters the driving state of the vehicle; and a starting device (11) that consumes power from the electricity storage device, starting the engine. During execution of inertial driving wherein the engine is suspended and the vehicle is driven by inertia: the engine is automatically started by means of the starting device on the basis of physical quantities relating to the engine; and while the assist device is causing the operation of the driving device, starting is prohibited.
Description
Technical field
The present invention relates to vehicle control system.
Background technique
In the past, can automatically making in the vehicle of engine stop, in the situation of engine stop, it is known according to predetermined condition, automatically making the technology of engine start.
For example, in patent documentation 1, disclosed a kind of technology of automatic stopping-starting device of motor, wherein, the sensor of the negative pressure that detects Brake booster has been set, in the situation of engine stop, in negative pressure, be reduced to specified value when following, made engine start.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2000-310133 communique
Here, in the situation that the starting of motor comes from by means of consumption the electric power that storage battery etc. holds device, the starting arrangement of engine start is carried out, when engine start, lower voltage occurs in electric accumulator.In addition, in vehicle, have the situation that auxiliary device is set, the electric power that described auxiliary device consumption comes from electric accumulator in motion for example makes to travel, with device (break) action.In having carried the vehicle of auxiliary device, for the starting timing automatically making in motion in the situation of engine start, do not discuss fully in the past.For example, lower voltage overlapping that wish to suppress the electric accumulator that the action of auxiliary device and the starting of motor cause.
Summary of the invention
The object of this invention is to provide a kind of vehicle control system, consume in the vehicle that the electric power that comes from electric accumulator makes to travel with the auxiliary device of device action having carried, in the situation that automatically making engine start, described vehicle control system can suppress the overlapping of the action of auxiliary device and the starting of motor.
Vehicle control system of the present invention, is characterized in that, comprising: motor, and described motor is the power source of vehicle; Electric accumulator; Auxiliary device, the electric power that described auxiliary device comes from described electric accumulator by consumption makes the travelling of travelling state that changes described vehicle use device action, supports driver's operation; Starting arrangement, described starting arrangement consumption comes from the electric power of described electric accumulator, makes described engine start; Stopping described motor by inertia make described Vehicle Driving Cycle carry out inertia traveling time, physical quantity based on relevant to described motor, by described starting arrangement, automatically make described engine start, and, at described auxiliary device, travel described in making with during device action, forbid described starting.
Preferably, in above-mentioned vehicle control system, the operation that to be driver assistance carry out for the described control member travelling with device of described auxiliary device, travel with the device of device action described in making, described physical quantity is the physical quantity that numerical value reduces and recovers by described engine running by the operation with respect to described control member.
Preferably, in described vehicle control system, it is described that to travel with device be the braking device that described vehicle is braked, described auxiliary device is the auxiliary brake operating being undertaken by described driver, consume the device that the electric power that comes from described electric accumulator makes described braking device action, and described physical quantity is the negative pressure that imports to the described motor in the step-up system of described braking device.
Preferably, in described vehicle control system, if by described auxiliary device, caused described in the release of travelling with device, remove forbidding described starting.
Preferably, in described vehicle control system, when carrying out described inertia traveling, (elder generation side) has in the situation of the running environment that is predicted to be described auxiliary device action forwardly, even before described auxiliary device travels with device action described in making, also forbid making described engine start by described starting arrangement.
Preferably, in described vehicle control system, when carrying out aforementioned inertia traveling, exist to be forwardly predicted as and carry out the running environment of the operation of described control member or be predicted as in the situation of at least one running environment in the running environment of described auxiliary device action, before described auxiliary device action, by described starting arrangement, make described engine start.
Preferably, in described vehicle control system, in being predicted as and carrying out the running environment of the operation of described control member, even in the situation that be predicted as and in fact carried out described operation, described physical quantity and do not become the value of the start request of described motor yet, do not make described engine start.
Preferably, in described vehicle control system, have to be forwardly predicted as and carry out the running environment of the operation of described control member or be predicted as in the situation of at least one running environment in the running environment of described auxiliary device action, under the large described negative pressure of the situation than there is not forwardly above-mentioned any running environment, reach the start request of described motor.
Vehicle control system of the present invention, is characterized in that, comprising: motor, and described motor is the power source of vehicle; Electric accumulator; Auxiliary device, the electric power that described auxiliary device comes from described electric accumulator by consumption makes the travelling of travelling state that changes described vehicle use device action, supports driver's operation; Starting arrangement, the electric power that described starting arrangement consumption comes from described electric accumulator makes described engine start; Stopping described motor by inertia make described Vehicle Driving Cycle carry out inertia traveling time, have to be forwardly predicted as and carry out travelling with the running environment of the operation of the control member of device or being predicted as in the situation of at least one running environment in the running environment of described auxiliary device action described, before described auxiliary device action, by described starting arrangement, make described engine start.
Preferably, in above-mentioned vehicle control system, and then the physical quantity based on relevant to described motor determines whether making described engine start, and wherein, the value of described physical quantity is because the operation to described control member changes.
Vehicle according to the invention control system, stopping motor by inertia make Vehicle Driving Cycle carry out inertia traveling time, physical quantity based on relevant to motor, by starting arrangement, automatically make engine start, and, forbid that auxiliary device makes to travel with the starting of the motor in during device action.Thereby vehicle according to the invention control system, has the action of auxiliary device of inhibition and the overlapping effect of the starting of motor.
Accompanying drawing explanation
Fig. 1 means according to the flow chart of the action of the vehicle control system of the first mode of execution.
Fig. 2 means the simple structural drawing according to the pith of the vehicle of the first mode of execution.
Fig. 3 is the time diagram carrying out in situation that the vehicle of the first mode of execution controls.
Fig. 4 means the simple structural drawing according to the pith of the vehicle of the second mode of execution.
Fig. 5 is the time diagram carrying out in situation that the vehicle of the second mode of execution controls.
Embodiment
Below, with reference to a kind of mode of execution of accompanying drawing detailed description vehicle according to the invention control system.In addition, the present invention can't help this mode of execution and limit.In addition, the structure member in mode of execution below comprises parts or the identical in fact parts that those skilled in the art can easily imagine.
(the first mode of execution)
Referring to figs. 1 through 3, for the first mode of execution, describe.Present embodiment relates to the vehicle control system that automatically makes engine start.Fig. 1 means according to the time diagram of the action of the vehicle control system of the first mode of execution of the present invention, and Fig. 2 means the simple structural drawing according to the pith of the vehicle of present embodiment.
According to the vehicle of present embodiment (with reference to the label 1 of Fig. 2), can be in parking and stop under steam motor, to improve oil consumption rate.Vehicle 1 comprises the Brake booster of the negative pressure of utilizing motor.In utilizing the Brake booster of motor negative pressure, in the stopping of motor, if repeatedly step on brake petal, the negative pressure of Brake booster can reduce.In this case, although automatically started by motor, guaranteed negative pressure,, after for engine start just by starter energising, due to its inrush current, can become the state that battery tension reduces.
On the other hand, be equipped with ABS device on vehicle 1, due to emergency braking etc., tire can, by locked situation, can prevent by ABS device locked.Here, in the situation that ABS device is to consume the device that the electric power come from storage battery makes break action, wish the action of ABS device and the lower voltage of the storage battery that caused by engine start can be not overlapping.In idle running is travelled, or in the deceleration before stopping, in the vehicle of engine stop, existing in the speed of a motor vehicle is not the situation that 0 o'clock motor also can stop, so, exist the automatic starting of motor and the overlapping possibility of action of ABS device.
The vehicle control system of present embodiment, during ABS device action, forbids the starting of motor.Vehicle control system, finishes the moment of (control of the break oil pressure being undertaken by ABS device finishes) in the braking maneuver of being undertaken by ABS device, motor is started automatically.Thereby according to the vehicle control system of present embodiment, the overlapping of lower voltage of the action of ABS device and the storage battery that caused by the starting of motor is suppressed.Excessive by suppressing battery tension reduction, can suppress the deterioration of storage battery.
Present embodiment take that to be equipped with (1) below to the vehicle of the structure member of (6) be prerequisite.
(1) can be under steam by the transmission system of engine stop inertia traveling.
(2) braking system (Brake booster, booster negative-pressure detection device).
(3) starter motor.
(4)ABS。
(5) storage battery.
(6)ECU。
In Fig. 2, label 1 represents vehicle.Vehicle 1 comprises: as motor 10, ABS device 12, storage battery 13, Brake booster 14 and the break 30 of power source.
Motor 10 is known heat engine, for example internal-combustion engine.Motor 10 has starter 11.Starter 11 is to consume the starting arrangement that the electric power come from storage battery 13 makes motor 10 startings, and starter 11 is for example known starter motor, by the electric power by coming from storage battery 13, is rotated, and makes motor 10 rotations.
On vehicle 1, be provided with the not shown brake petal as the control member of break 30.The operation that ABS device 12 driver assistances carry out brake petal, makes break 30 actions.ABS device 12 detects the wheel velocity of each wheel when braking, is supplied to the braking oil pressure of break 30 by control, prevents the locked of vehicle.ABS device 12 comprises not shown controller, oil pressure pump and solenoid valve.The controller of ABS device 12 makes solenoid valve action based on detected wheel velocity, regulates the break oil pressure that is supplied to break 30 from oil pressure pump.
Brake booster 14 is step-up systems of break 30.Brake booster 14 utilizes the auxiliary legpower to brake petal of the negative pressure of motor 10.The negative pressure chamber 15 of Brake booster 14 is connected with the not shown inlet air pathway of motor 10.When motor 10 running, inlet air pathway becomes negative pressure, and this negative pressure is imported into negative pressure chamber 15.When driver steps on brake petal, by negative pressure and the atmospheric pressure difference of negative pressure chamber 15, increase legpower, pass to master cylinder.When making Brake booster 14 action by brake operating, in Brake booster 14, negative pressure is consumed, from the inlet air pathway of motor 10 to negative pressure chamber's 15 supplying negative voltages.On vehicle 1, be provided with the B/P EGR Back Pressure Transducer EGR 16 of the negative pressure that detects negative pressure chamber 15.
On vehicle 1, be provided with to control and comprise motor 10 at the electronic control unit (ECU) 20 of the various piece of interior vehicle 1.ECU20 is electrically connected to motor 10, carries out the various controls of motor 10.For example, the emitted dose of the fuel in ECU20 control engine 10, discharge time, firing time etc.In addition, ECU20 carries out the starting control of motor 10.Piloting engine 10 in the situation that, ECU20 makes starter 11 actions, carries out the starting of motor 10, when making engine speed rising by starting, carries out to injection and the igniting of the fuel of motor 10.ECU20 comprises total control of the vehicle 1 in being controlled at of such motor 10.The vehicle control system 1-1 of present embodiment comprises motor 10, starter 11, storage battery 13, ABS device 12 and ECU20.
ECU20 stops motor 10, eliminates the drag losses (or engine braking loss) of motor, the inertia traveling that can utilize inertia that vehicle 1 is travelled.For example,, in the situation that do not accelerate to carry out inertia traveling in the travelling of vehicle 1.If ECU20 is judged to be and does not accelerate the testing result of the sensor of the operation amount of not shown accelerator pedal according to detecting, carry out inertia traveling.On vehicle 1, between motor 10 and the not shown driving wheel of vehicle 1, be provided with clutch.Under the state being engaged at this clutch, motor 10 is connected with driving wheel, can transferring power.In addition, under the state disconnecting at clutch, motor 10 is cut off with driving wheel, can not transferring power.ECU20 disconnects the clutch between motor 10 and driving wheel when inertia traveling, the rotation of motor 10 is stopped, and vehicle 1 is travelled.
Like this, because motor 10 when the inertia traveling stops, so, carry out brake operating at every turn, negative pressure reduces (minimizing).Owing to being to carry out under engine stop-state in the situation of braking deceleration, can not utilize the air-intake negative-pressure of motor 10, so, when stepping on brake petal, Brake booster negative pressure reduces, and particularly, is repeatedly stepping on brake petal (Port Application ピ Application グ Block レ-キ, pumping brake: in situation hydraulic braking), Brake booster negative pressure significantly reduces.
The miscellaneous function of ECU20 in order to keep being produced by Brake booster 14, automatically makes motor 10 startings, guarantees negative pressure.ECU20, when the negative pressure of negative pressure chamber 15 is reduced to predetermined threshold value Pt, pilots engine 10 again by starter 11, and negative pressure is increased.For Brake booster 14 is realized this function, according to necessary range of negative pressure, set this threshold value Pt.For example, according to Brake booster 14, can bring into play rightly the lower limit of the negative pressure of reinforcement function, setting threshold Pt.When the negative pressure of negative pressure chamber 15 is reduced to threshold value Pt, by motor 10, start and negative pressure increases, Brake booster 14 can always play a part as step-up system rightly.Like this, when carrying out inertia traveling, ECU20, according to the negative pressure of the negative pressure chamber 15 of the physical quantity as relevant to motor 10, automatically makes motor 10 startings.
Because 10 starter current of employing of motor are large electric currents, so when engine start, battery tension significantly reduces.Here, be accompanied by motor 10 that negative pressure reduces restart and the action of ABS device 12 is all that the operation of stepping on by brake petal occurs, therefore, there is the possibility that causes that both are overlapping.For example,, during ABS device 12 action, when the negative pressure of negative pressure chamber 15 reduces, while carrying out the starting of motor 10, in the action of ABS device 12, produces the lower voltage of storage battery 13.Like this, wish to suppress the overlapping of the action of ABS device 12 and the reduction of the battery tension that engine start causes.
The vehicle control system 1-1 of present embodiment, as described below, compares with engine start, and the action of ABS device 12 is preferential.In the action of ABS device 12, forbid the automatic starting of motor 10, make the start delay of motor 10 to the release of the break 30 being caused by ABS device 12.Like this, ECU20, ABS device 12 make break 30 action during, the starting by the motor 10 forbidding being undertaken by starter 11, suppresses the overlapping of the action of ABS device 12 and the lower voltage of the storage battery 13 being caused by engine start.
With reference to Fig. 1 and Fig. 3, the action of present embodiment is described.Fig. 3 means the diagram of an example that carries out the time diagram in situation that the vehicle of present embodiment controls.In Fig. 3, (a) expression, as the Brake booster negative pressure of the negative pressure of the negative pressure chamber 15 of Brake booster 14, (b) represents the output voltage of storage battery 13.As shown in Figure 3, if brake petal is operated, the negative pressure of Brake booster reduces, and when brake petal is released, while being operated with brake petal, compares, and the negative pressure of Brake booster reduces greatlyr.
With reference to Fig. 1, first, at step S10, utilize ECU20, judgement is started decision content automatically as the whether not enough motor of Brake booster negative pressure of the negative pressure of negative pressure chamber 15.So-called motor starts decision content automatically, is the threshold value Pt that determines whether 10 the negative pressure of automatically piloting engine.ECU20, according to the comparative result of the negative pressure of the negative pressure chamber 15 that utilizes B/P EGR Back Pressure Transducer EGR 16 to detect and predetermined threshold value Pt, carries out the judgement of step S10.In Fig. 3, at moment t1, become Brake booster negative pressure below threshold value Pt, the state that carries out sure judgement in step S10.In the situation that the result of determination of step S10 is to be judged to be the not enough motor of Brake booster negative pressure automatically to start decision content (step S10-Y), enter step S20, in the situation that not being such (step S10-N), until become sure judgement, the judgement of repeating step S10.
At step S20, utilize ECU20 to judge that ABS device 12 is whether in action.ECU20 communicates by letter by the controller with detection ABS device 12, detect ABS device 12 whether in action, in Fig. 3, at moment t1, brake petal is operated, ABS device 12 starts action, and 12 perseverations of ABS device are until become and close (being released) at moment t2 brake petal.Whereby, from moment t1 to moment t2, in step S20, make sure judgement.In the action of ABS device 12, do not enter next step S30 (motor starts automatically) and the judgement of repeating step S20 whereby, is forbidden the starting of motor 10.In the situation that the result of determination of step S20 is for judging that ABS device 12 is in action (step S20-Y), the judgement of repeating step S20, until make, negate to judge (release of ABS device 12), not being judged as in the situation (step S20-N) of ABS device 12 in action, enter step S30.
At step S30, by ECU20, carry out the automatic starting of motor 10.Due to the release of the break 30 being undertaken by ABS device 12, so ECU20 removes the starting of motor 10 and forbids, make starter 11 actions, make motor 10 runnings, pilot engine 10.In Fig. 3, at moment t2, the release of ABS device 12, motor 10 is started.When starting by motor 10, when the Brake booster negative pressure of negative pressure chamber 15 increases (step S40), this control flow finishes.
Like this, in the vehicle control system 1-1 of present embodiment, during ABS device 12 action (step S20-Y), do not carry out the starting of motor 10, when the release (step S20-N) of ABS device 12, motor 10 is started.Whereby, lower voltage overlapping that suppresses the storage battery 13 that the action of ABS device 12 and starting because of motor 10 cause.In the action of ABS device 12, when carrying out the starting of motor 10, as shown in label A in Fig. 3, the action meeting of the reduction of battery tension and ABS device 12 is overlapping.On the other hand, in the vehicle control system 1-1 of present embodiment, as shown in arrow Y1, by the release to ABS device 12 by the starting timing retard of motor 10, suppress the overlapping of the reduction of battery tension and the action of ABS device 12.In addition, when the release of ABS device 12, motor 10 is by starting, motor 10 runnings, and whereby, negative pressure increases (recoverys), thereby, until on before once carrying out brake operating during, can promptly make the recovery of Brake booster negative pressure.
In addition, in the present embodiment, the preferential auxiliary device of the starting of ratio engine 10 is ABS device 12, still, is not limited to this.As auxiliary device, for example, also can make in the situation that promptly stepping on brake petal, by utilizing actuator to produce to force the break auxiliary device of power or controlling etc. VSC (the VehicleStability Control: the starting of the action ratio engine 10 intact stability control) installing is preferential of the horizontal slip of mitigation wheel by braking.For example, when VSC device action, even if brake petal is operated, the negative pressure of negative pressure chamber 15 is reduced to not enough threshold value Pt, as long as in the action of VSC device, forbid the starting of motor 10, after the release of VSC device, pilot engine 10.That is, as the electric power of battery consumption 13, make the auxiliary device of break 30 actions, also can be using the device except ABS device 12 as the preferential auxiliary device of the starting of ratio engine 10.Auxiliary device also can be not limited to action when brake petal is operated.
In addition, make travelling of auxiliary device action be not limited to break 30 with device.Also can be make except break 30 travelling preferential with the starting of the auxiliary device ratio engine 10 of device action.
(variation of the first mode of execution)
In above-mentioned the first mode of execution, in the situation that as the ABS device 12 of auxiliary device in action, the starting of motor 10 is prohibited, but, in addition, have forwardly in the situation of the running environment that is predicted to be auxiliary device action, even before auxiliary device makes to travel with device action, also can forbid the starting of motor 10.When being that the situation of ABS device 12 is when describe as an example with auxiliary device, so-called the place ahead has the running environment that is predicted to be 12 actions of ABS device, for example, refer to predict and have forwardly turning, carry out brake operating, and the road surface that predicts the place ahead is moist or freezes the situation that ABS device 12 moves.These running environments can utilize the known devices such as automated navigation system to obtain.
Have forwardly in the situation of the running environment that is predicted to be auxiliary device action, by forbidding in advance the starting of motor 10 make to travel with device action at auxiliary device before, suppress the overlapping of the starting of motor 10 and the action of auxiliary device.
(the second mode of execution)
Below, with reference to Fig. 4 and Fig. 5, the second mode of execution is described.For the second mode of execution, the structure member with explanation is in the above-described embodiment there is to the structure member of same function, give identical label, omit its repeat specification.
The difference of the vehicle control system 1-2 of present embodiment and the vehicle control system 1-1 of above-mentioned the first mode of execution is, for the action of ABS device 12 and the starting of motor 10 not overlapping, in the situation that predict the action of ABS device 12, before 12 actions of ABS device, make in advance motor 10 startings.That is, in above-mentioned the first mode of execution, after the action of ABS device 12, make motor 10 startings, still, in mode of execution, before the action of ABS device 12, make motor 10 startings.Fig. 4 means according to the summary construction diagram of the pith of the vehicle of present embodiment, and Fig. 5 represents to carry out an example of the time diagram of the situation that the vehicle of present embodiment controls.
As shown in Figure 4, on vehicle 1, be provided with navigation ECU40.Navigation ECU40 is the control gear of not shown navigation system.As navigation system, can use this car position checkout gear of current location with this vehicle of detection, the known system of map data base.Preferably, navigation system can, by car inter-vehicle communication with other vehicle etc., obtain road information from outside.ECU20 can be connected with navigation ECU40, according to the signal that comes from the ECU40 that navigates, obtains the running environment relevant with the road in this vehicle location, the place ahead etc.
As illustrated with reference to Fig. 5, the vehicle control system 1-2 of present embodiment, predicting carry out brake petal operation, ABS device 12 action in the situation that, and, when the reduction predicting due to the Brake booster negative pressure corresponding to predicted operation of arriving, while making the start request of motor 10, before carrying out brake operating, (before 12 actions of ABS device), make motor 10 startings.
In Fig. 5, (a) represent Brake booster negative pressure, (b) represent the output voltage of storage battery 13.Label 100 represents to carry out the passing of the Brake booster negative pressure in the situation of control of present embodiment.In addition, symbol 101 represents an example of the passing of existing Brake booster negative pressure.Symbol Pt1 and symbol Pt2 represent respectively the threshold value relevant to Brake booster negative pressure.
Second Threshold Pt2 is and the same threshold value of threshold value Pt (with reference to Fig. 3) of above-mentioned the first mode of execution, when Brake booster negative pressure is reduced to not enough Second Threshold Pt2, according to Brake booster negative pressure, makes the start request of motor 10.In addition, first threshold Pt1 decides based on Second Threshold Pt2 and negative pressure variation amount Δ P.Negative pressure variation amount Δ P represents, when brake operating starts, after brake petal is operated until the reduction (size) of the Brake booster negative pressure in the brake operating that brake petal is released, brake operating finishes.
First threshold Pt1 is the negative pressure larger than Second Threshold Pt2, and the difference of first threshold Pt1 and Second Threshold Pt2 becomes negative pressure variation amount Δ P.Thereby, in the situation that the negative pressure of current negative pressure chamber 15 is the negative pressure between first threshold Pt1 and Second Threshold Pt2, upper while once carrying out brake operating, Brake booster negative pressure after brake operating finishes becomes and is less than Second Threshold Pt2, can predict that (inferring) is for being necessary to pilot engine 10.In the present embodiment, at the not enough first threshold Pt1 of Brake booster negative pressure and in the situation that Second Threshold Pt2 is above, when being predicted as while carrying out brake operating, 12 action of ABS device, before 12 actions of ABS device, motor 10 is started.That is, ECU20, except running environment, also according to the Brake booster negative pressure of the physical quantity as changing because of brake operating numerical value, determines whether to make motor 10 startings.
Negative pressure variation amount Δ P is predetermined value.The reduction of in fact, carrying out the Brake booster negative pressure in the situation of brake operating by driver changes according to brake operating amount etc.Negative pressure variation amount Δ P for example, can be the maximum value of the reduction of the Brake booster negative pressure in a brake operating.In the situation that setting like this negative pressure variation amount Δ P, as long as in the situation that be predicted as a bit due on once brake operating make Brake booster negative pressure lower than the possibility of Second Threshold Pt2, just always make motor 10 startings.Consequently, Brake booster negative pressure is reduced to not enough Second Threshold Pt2, the chance of making the start request of motor 10 reduces.Therefore, can suppress in advance the overlapping of the start request of motor 10 and the action of ABS device 12.
Like this, in the situation that be predicted as when on once carry out making when brake operating, Brake booster negative pressure reduce the start request of motor 10, ECU20 made motor 10 startings before carrying out brake operating.In inertia traveling process, ECU20, according to the running environment in the place ahead of obtaining from navigation ECU40, determines whether and carries out brake operating.Specifically, ECU20 judges whether the place ahead of this vehicle exists and is predicted to be the running environment that carries out brake operating, and for example, bend, point of intersection, road junction, signal etc. are necessary the running environment that slows down or stop.In addition, ECU20 obtains the information of road surface of the running environment as the place ahead of obtaining from navigation ECU40.Information of road surface such as be relevant road surface be whether moist or road surface be whether freeze etc. the information of pavement state.On moist road surface or the little road of the road surface μ such as road surface that freeze, in the situation that carrying out brake operating, can be estimated as ABS device 12 and easily move.That is the road that, road surface μ is little is predicted to be dismissible the running environment of ABS device 12 actions.
In addition, replace information of road surface, ECU20 also can be according to the information obtaining by car inter-vehicle communication, the action of prediction ABS device 12 auxiliary devices such as grade.For example, communicating by letter of the vehicle by with travelling, obtain in the situation of information of the action such as the auxiliary device that is illustrated in ABS device in the vehicle travelling travelling in road ahead above auxiliary device action in the time of can being predicted as this vehicle and travelling above on this road.
In the situation that Brake booster negative pressure is the negative pressure between first threshold Pt1 and Second Threshold Pt2, according to obtained running environment, have to be forwardly predicted as and carry out the running environment of brake operating and be predicted as in the situation of running environment of ABS device 12 action, ECU20 made motor 10 startings before 12 actions of ABS device.In Fig. 5, the Brake booster negative pressure before moment t3 is the negative pressure between first threshold Pt1 and Second Threshold Pt2.In the control of prior art of starting of not carrying out motor according to the prediction of brake operating, at moment t4, brake operating starts, and in the moment in Brake booster negative pressure 101 lower than Second Threshold Pt2, makes the start request of motor 10.At this moment, if ABS device 12 is moving, the starting of the action of ABS device 12 and motor 10 is overlapping.
On the other hand, in the vehicle control system 1-2 of present embodiment, when predicting the action of ABS device 12 according to running environment, motor 10 is started.At moment t3, according to the information that comes from the ECU40 that navigates, detect existence forwardly and be predicted as the running environment that carries out brake operating, 12 actions of ABS device.Whereby, ECU20 makes motor 10 startings at moment t3 by starter 11.Consequently, in the situation that carry out Brake booster negative pressure 100 increase from moment t3 of the control of present embodiment, the moment t4 starting brake operating, becomes enough large negative pressure.Thereby, even if carry out brake operating, also do not produce the start request of motor 10, thereby the overlapping of start request of the action of ABS device 12 and motor 10 is suppressed.
In addition, in the present embodiment, in Brake booster negative pressure, in the situation that first threshold Pt1 is above, even if predict the action of ABS device 12, motor 10 is not started yet.; be predicted to be under the running environment that carries out brake operating; even in fact carried out yet not enough Second Threshold Pt2 (making the value of the start request of motor 10) of brake operating Brake booster negative pressure in the situation that be predicted as, ECU20 does not make motor 10 startings.Whereby, can in the situation that be defined in the effect of predicting by motor 10 starting is produced, before the action of ABS device 12, make motor 10 startings.
In the situation that make motor 10 startings according to the action prediction of ABS device 12, in order to finish the starting of motor 10 before carrying out brake operating by driver, preferably, ECU20 detects at least the place that arrives in the moment than requiring motor 10 startings running environment more on the front.That is, in the situation that the high speed of a motor vehicle is travelled, compare with the situation that the low speed of a motor vehicle is travelled, according to the running environment in the place ahead, carry out the prediction of brake operating, the action prediction of ABS device 12.
In addition, in the present embodiment, have to be forwardly predicted as simultaneously and carry out the running environment of brake operating and be predicted as in the situation of running environment of ABS device 12 action, motor 10 is started, and still, is not limited to this.For example, also can have to be forwardly predicted as and carry out the running environment of brake operating or be predicted as in the situation that carried out at least one running environment in the running environment of occasion ABS device 12 action of brake operating, before 12 actions of ABS device, motor 10 is started.
Like this, have to be forwardly predicted as and carry out the running environment of brake operating or be predicted as in the situation of at least one running environment in the running environment of ABS device 12 action, when before 12 actions of ABS device, motor 10 is by starting, even the Brake booster negative pressure larger than Second Threshold Pt2, motor 10 is also started.On the other hand, when the place ahead does not have to be predicted as, do not carry out the running environment of brake operating and be predicted as in the situation of any running environment in the running environment of ABS device 12 action, after Brake booster negative pressure becomes not enough Second Threshold Pt2, motor 10 is started.; have to be forwardly predicted as and carry out the running environment of brake operating or be predicted as in the situation of at least one running environment in the running environment of ABS device 12 action, under the large Brake booster negative pressure of the situation than there is not forwardly any described running environment, make the start request of motor 10.
At auxiliary device, be in the situation that the device also moving do not carry out brake operating in the situation that, preferably, according to the running environment that is predicted as the auxiliary device actions such as information of road surface, motor 10 is started.For example, preferably, no matter whether there is brake operating, in the situation that VSC device can both move, detect forwardly moist road surface or freeze in the situation of the running environment that the action possibility of the VSC devices such as road is high, no matter whether brake operating is predicted, arrive, all make the start request of motor 10.
(the first variation of the second mode of execution)
Also can be according to the operation beyond brake operating, such as carrying out according to whether being predicted as the possibility that steering operation is predicted the auxiliary device actions such as ABS device 12.Also can, by the operation outside brake operating, for example, by steering operation, infer out the possibility that intact stability reduces, auxiliary device moves and increase.Have forwardly in the situation of the running environment that can be estimated as the operation of carrying out this intact stability reduction, if make motor 10 startings, can suppress more reliably the overlapping of the action of auxiliary device and the starting of motor 10.
For the possibility of ABS device 12 auxiliary devices such as grade actions, not only according to running environment, also can predict according to the speed of a motor vehicle etc.In addition, also can carry out according to driver's technical ability or driving cycle etc. the action prediction of auxiliary device.For example, in the situation that driver's technical ability is low, or, in the situation with the driver of large acceleration-deceleration regulation speed, the situation high with driver's technical ability or compare with the driver's of little acceleration-deceleration regulation speed situation, for identical running environment, estimate that the possibility of auxiliary device action can increase.
(second variation of the second mode of execution)
In the present embodiment, the maximum value of the reduction of the Brake booster negative pressure using negative pressure variation amount Δ P in a brake operating, still, is not limited to this.Negative pressure variation amount Δ P also can set according to the reduction scope of the Brake booster negative pressure in a brake operating.For example, negative pressure variation amount Δ P can be also intermediate value or the minimum value of the reduction scope of Brake booster negative pressure.Because negative pressure variation amount Δ P becomes the little value in the scope of the reduction of Brake booster negative pressure, the chance that motor 10 is started before brake operating is less, so, from improving the viewpoint of oil consumption rate, be favourable.In addition, negative pressure variation amount Δ P also can be according to changes such as running environment or driver's technical ability or driving cycles.
For example, in the situation that negative pressure variation amount Δ P can change according to running environment, according to the running environment in the place ahead, infer brake operating amount (stroke).For example, in the situation that be predicted as and carry out brake operating according to the turning in the place ahead, according to the curvature at this turning or the current speed of a motor vehicle, the distance at arrival turning etc., infer brake operating amount.By the brake operating amount of inferring, infer the reduction of the Brake booster negative pressure that the brake operating owing to entering turning produces, corresponding to inferred reduction, determine negative pressure variation amount Δ P.In the situation that inferred reduction is little, negative pressure variation amount Δ P becomes little value, in the situation that inferred reduction is large, negative pressure variation amount Δ P becomes large value.If determine negative pressure variation amount Δ P according to running environment like this, can determine whether accurately because brake operating makes the Brake booster negative pressure not enough Second Threshold Pt2 that becomes.
The industrial possibility of utilizing
As mentioned above, vehicle according to the invention control system is useful in the vehicle that can automatically make engine start, particularly, is suitable for suppressing the action of auxiliary device and the starting of motor is overlapping.
Symbol description
1-1,1-2 vehicle control system
1 vehicle
10 motors
11 starters
12 ABS devices
13 storage batteries
14 Brake boosters
15 negative pressure chamber
16 B/P EGR Back Pressure Transducer EGRs
20 ECU
30 breaks
40 navigation ECU
Pt threshold value
Pt1 first threshold
Pt2 Second Threshold
Δ P negative pressure variation amount
Claims (9)
1. a vehicle control system, is characterized in that, comprising:
Motor, described motor is the power source of vehicle;
Electric accumulator;
Auxiliary device, described auxiliary device consumption comes from the electric power of described electric accumulator and uses device action so that change the travelling of travelling state of described vehicle, whereby, supports driver's operation;
Starting arrangement, described starting arrangement consumption comes from the electric power of described electric accumulator so that described engine start;
When described engine stop is carried out making the inertia traveling of described Vehicle Driving Cycle by inertia, physical quantity based on relevant to described motor, by described starting arrangement, automatically make described engine start, and, at described auxiliary device, travel described in making with during device action, forbid described starting
The operation that to be driver assistance carry out for the described control member travelling with device of described auxiliary device, travel with the device of device action described in making,
Described physical quantity is by the operation of described control member and the physical quantity that numerical value reduces and numerical value recovers by the running of described motor.
2. vehicle control system as claimed in claim 1, is characterized in that, described in travel with device be braking described vehicle braking device,
Described auxiliary device be the brake operating to being undertaken by described driver assist, consume come from described electric accumulator electric power so that the device of described braking device action,
Described physical quantity is the negative pressure that is imported into the described motor in the step-up system of described braking device.
3. vehicle control system as claimed in claim 1, is characterized in that, if by described auxiliary device, caused described in the release of travelling with device, remove forbidding described starting.
4. vehicle control system as claimed in claim 1, it is characterized in that, when carrying out described inertia traveling, have forwardly in the situation that is predicted to be the running environment that described auxiliary device will move, even before described auxiliary device travels with device action described in making, also forbid making described engine start by described starting arrangement.
5. vehicle control system as claimed in claim 1, it is characterized in that, when carrying out described inertia traveling, have to be forwardly predicted to be and will carry out the running environment of the operation of described control member or be predicted to be in the situation of at least one running environment in the running environment that described auxiliary device will move, before the action of described auxiliary device, by described starting arrangement, make described engine start.
6. vehicle control system as claimed in claim 5, it is characterized in that, in being predicted to be and will carrying out the running environment of the operation of described control member, even in fact carried out described operation being predicted to be, described physical quantity also can not reach in the situation of value of the start request of making described motor, does not make described engine start.
7. vehicle control system as claimed in claim 2, it is characterized in that, have to be forwardly predicted to be and will carry out the running environment of the operation of described control member or be predicted to be in the situation of at least one running environment in the running environment that described auxiliary device will move, under the large negative pressure of the situation that does not have any described running environment than the place ahead, make the start request of described motor.
8. a vehicle control system, is characterized in that, comprising:
Motor, described motor is the power source of vehicle;
Electric accumulator;
Auxiliary device, described auxiliary device consumption comes from the electric power of described electric accumulator and uses device action so that change the travelling of travelling state of described vehicle, whereby, supports driver's operation;
Starting arrangement, described starting arrangement consumption comes from the electric power of described electric accumulator so that described engine start;
When described engine stop is carried out making the inertia traveling of described Vehicle Driving Cycle by inertia, have to be forwardly predicted to be and will carry out travelling with the running environment of the operation of the control member of device or being predicted to be in the situation of at least one running environment in the running environment that described auxiliary device will move described, before the action of described auxiliary device, by described starting arrangement, make described engine start
The operation that to be driver assistance carry out for the described control member travelling with device of described auxiliary device, travel with the device of device action described in making.
9. vehicle control system as claimed in claim 8, is characterized in that, and then the physical quantity based on relevant to described motor determines whether making described engine start, and the numerical value of described physical quantity changes because of the operation to described control member,
Described physical quantity is by the operation of described control member and the physical quantity that numerical value reduces and numerical value recovers by the running of described motor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/057712 WO2011135725A1 (en) | 2010-04-30 | 2010-04-30 | Vehicle control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102308067A CN102308067A (en) | 2012-01-04 |
| CN102308067B true CN102308067B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201080002444.9A Expired - Fee Related CN102308067B (en) | 2010-04-30 | 2010-04-30 | Vehicle control system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8880318B2 (en) |
| JP (1) | JP5045815B2 (en) |
| CN (1) | CN102308067B (en) |
| DE (1) | DE112010005534B4 (en) |
| WO (1) | WO2011135725A1 (en) |
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| US9598084B2 (en) | 2012-10-31 | 2017-03-21 | Toyota Jidosha Kabushiki Kaisha | Vehicle travel controller |
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| JP2014139034A (en) * | 2013-01-21 | 2014-07-31 | Hitachi Automotive Systems Ltd | Vehicle electric assistor control device |
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| JP2017031806A (en) * | 2013-12-11 | 2017-02-09 | 日産自動車株式会社 | Engine automatic stop control device |
| JP2015221584A (en) * | 2014-05-22 | 2015-12-10 | ダイハツ工業株式会社 | Vehicle control device |
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- 2010-04-30 JP JP2010545307A patent/JP5045815B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| DE112010005534B4 (en) | 2018-11-29 |
| US8880318B2 (en) | 2014-11-04 |
| WO2011135725A1 (en) | 2011-11-03 |
| JP5045815B2 (en) | 2012-10-10 |
| CN102308067A (en) | 2012-01-04 |
| US20110270501A1 (en) | 2011-11-03 |
| JPWO2011135725A1 (en) | 2013-07-18 |
| DE112010005534T5 (en) | 2013-04-11 |
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